Boat.



M. HALPERIN.

BOAT.

APPLICATION FILED MAYZI. 191B.

1 ,287,977. Patented Dec. 17, 1918.

MORRIS HALPERIN, 0F BROOKLYN, NEW YORK.

BOAT.

Application filed May 21, 1918.

To all whom it may concern:

Be it known that I, Moanrs HALPE-RIN, a citizen of the United States,and resident of the borough of Brooklyn, in the city and State of NewYork, have invented a new and useful Improvement in Boats, of which thefollowing is a specification.

My invention relates to boats and particularly to small boats to be usedas life boats, and has for its object the provision of means formaterially reducing the tendency of the boat to capsize when beinglaunched and when afloat in rough water.

A further object is to provide a simple and efficient device forincreasing the seaworthiness of a boat, which device can be attached toany boat with very little labor and at small expense.

Another object consists in providing certain improvements in the form,construction and arrangement of the several parts whereby the abovenamed and other objects may be effectively attained.

A practical embodiment of my invention is represented in theaccompanying drawings in which,

Figure 1 represents a perspective view of a boat with my stabilizingdevice in operative position.

Fig. 2 represents an inverted plan view of the same.

Fig. 3 represents a vertical section taken in the plane of the lineIII-III of Fig. 2.

Fig. 1 represents a detail plan view of a portion of a modified form ofstabilizing fin.

Fig. 5 represents a vertical section taken in the plane of the line VVof Fig. 5.

Fig. 6 represents a view similar to Fig. 2, showin a modified form, and

Fig. represents a vertical section taken in the plane of the lineVII-VII of Fig. 6.

Referring to the preferred form shown in Figs. 1 to 3 inclusive; thehull 1 of the boat is provided with a central keel 2 to which laterallyextending fins 3 are attached by means of lag screws, bolts, or in anyother convenient manner.

The fins 3 may be formed of sheet metal, as shown in Fig. 1, or they mayhave a metal frame 1 and a covering 5 of suitable cloth, such aswater-proofed duck or canvas, as shown in Figs. 4 and 5, and arepreferably made narrow near the keel but greatly widening out towardtheir ends so as to pro- Specification of Letters Patent.

Patented Dec. 17, 1918.

Serial No. 235,826.

vide a considerable bearing surface against the water at these points.The fins, as shown in Fig. 1, are arranged in pairs, one pair forwardand one pair aft of the center of the boat, but it will be understoodthat such a number of pairs of fins may be used as are found desirableor necessary, and they may be formed separately or in a continuouspiece.

Vertically extending braces 6 are provided, which are attached to theends of the fins 3 and to the side rails of the boat, and

serve to hold the fins securely in place.

In operation the fins 3, which are located below the water line andspaced from the bottom of the boat, will tend to prevent either side ofthe boat from rising and the opposite side from lowering, and thus theeffect of rough water and sudden shifting of the boats burden will bematerially re duced, the stability of the boat increased and itsoperation made much easier and safer.

Referring to the modified form shown in Figs. 6 and 7, the fins, denotedby 7, are very much elongated and placed longitudinally of the boat.They are also spaced a considerable distance from the keel 2, to whichthey may be secured by braces 8, while braces 9, quite similar to thebraces 6 of the preferred form, extend from the outer edges of the fins7 to the sides of the boat.

In regard to both the preferred and modified forms, it will be seen thatthe fins lie substantially in the plane of the keel of the boat, andthat their effective area is spaced from the keel. This last feature isaccomplished in the preferred form by the nar rowing of the fins as theyapproach the keel, and in the modified form by actually spacing the finsfrom the keel. This arrangement is very much more advantageous than onein which the effective area of the fins is immediately adjacent theboat, for the reason that it permits the free passage of water betweenthe efi'ective area of the fins and the hull of the boat. I also findthat it is highly desirable to have the fins as low down as the plane ofthe keel.

It will be understood that various changes may be resorted to in theform, construction, size and location of the fins without departing fromthe spirit and scope of my invention, and hence I do not intend to belimited to the details shown and described except as they may bespecifically set forth in the claims.

What I claim is:

1. The combination with the hull of a boat, of a pair of fins spacedfrom the bot tom of the boat and attached to its keel and extendingoutwardly on opposite sides for maintaining the equilibrium of the boatin the water.

2. The combination with the hull of a boat, of a pair of fins spacedfrom the bottom of the boat and attached to its keel and extendingoutwardly on opposite sides for maintaining the equilibrium of the boatin the water and Vertical braces extending from the said fins to thesides of the boat.

8. The combination with the hull of a boat, of a pair of fins attachedto the keel of the boat and extending laterally therefrom on oppositesides for maintaining the for five cents equilibrium of the boat in thewater, said fins being relatively narrow at their point of juncture withthe keel and relatively wide at their extremities.

4:. The combination with the hull of a boat, of a pair of fins attachedto the boat and extending laterally therefrom on opposite sides formaintaining the equilibrium of the boatin the water, the effective areaof said fins being spaced from the boat.

5. The combination with the hull of a boat, of a pair of fins spacedfrom the bot tom of the boat and attached to its keel and extendingoutwardly on opposite sides for maintaining the equilibrium of the boatin the water, the effective area of said fins being spaced from theboat.

In testimony, that I claim the foregoing as my invention, I have signedmy name, this 17th day o1 May 1918.

MORRIS HALPERIN.

each, by addressing the Commissioner of 'Eatenta,

Washington, E3.

